基于定向扩散的数据收集传感器网络拥塞控制方法

CONGESTION CONTROL METHOD FOR DATA COLLECTION SENSOR NETWORKS BASED ON DIRECTED DIFFUSION

针对传统网络拥塞控制方法存在的控制效率低的问题,在数据收集传感器网络下提出定向扩散拥塞控制方法。建立网络拥塞模型并在传感器网络环境下进行变换,通过观测矩阵对数据收集传感器网络中的拥塞秦情况进行检测,生成相应的拥塞控制指令,设计定向扩散拥塞控制器并通过控制器执行控制指令,分别从网络传输速率和网络流量分配两个方面,实现网络拥塞避免控制。为了检验设计出的网络拥塞控制方法的性能进行仿真实验,从网络传输丢包率和单节点吞吐量两个方面验证该控制方法的效率。经过仿真实验发现设计的控制方法比传统控制方法的平均丢包率低0.4%,且单点的吞吐量更高,由此判定定向扩散的网络拥塞控制方法,在数据收集传感器网络当中具有较高的使用效率。

Aiming at the low control efficiency of traditional network congestion control methods,a directional diffusion congestion control method is proposed in data collection sensor networks.The network congestion model is established and transformed in the sensor network environment.Through the observation matrix,the congestion in the data collection sensor network is detected,the corresponding congestion control instructions are generated,the directional diffusion congestion controller is designed and the control instructions are executed through the controller.The network congestion avoidance control is realized from two aspects of network transmission rate and network traffic allocation System.In order to test the performance of the designed network congestion control method,the efficiency of the control method is verified from two aspects:packet loss rate and throughput of single node.The simulation results show that the designed control method has a lower average packet loss rate of 0.4%than the traditional control method,and a higher single point throughput.Therefore,the directed diffusion network congestion control method is determined.Data collection sensor networks have high efficiency.